The system consisting of the sun and the planets and other objects that revolve around.

An object that orbits a star, is large enough to have become rounded by it's own gravity, and has cleared an area of orbit.

A unit of distance equal to the average distant between Earth and the sun, about 150 million kilometers.

An object that orbits the sun and is spherical, but has not cleared an area of it's orbit.

One of the small asteroid-like bodies that formed the building blocks of the planets.

The central region of the sun, where nuclear fusion takes place.

The process in which two atomic nuclei combine to form a larger nucleus, forming a heavier element and releasing huge amounts of energy; the process by which energy is produced by stars.

A region of very tightly packed glass in the sun's interior where energy is transferred mainly in the form of electromagnetic radiation.

The outermost layer of the sun's interior.

the inner layer of the sun's atmosphere that gives off its visible light; the sun's surface.

The middle layer of the sun's atmosphere.

The outer layer of the sun's atmosphere.

A stream of electrically charged particles that emanate from the sun's corona.

A dark area of gas on the sun's surface that is cooler than surrounding gases

A huge, reddish loop of gas that protrudes from the sun's surface, linking parts of sunspot regions.

An eruption of gas from the sun's surface that occurs when loops in the sunspot regions that suddenly connect.

The name very often given to the four inner planets: Mercury, Venus, Earth, and Mars.

The trapping of heat near a planet's surface by certain gases in the planet's atmosphere.

The name often given to the outer planets: Jupiter, Saturn, Uranus, and Neptune.

A thin disk of small ice and rock particles surrounding a planet.

The region of the solar system between the orbits or Mars and Jupiter, where many asteroids are found.

A region where many small objects orbit the sun and that stretches from beyond the orbit of Neptune to about 100 times Earth's distance from the sun.

A spherical region of comets that surrounds the solar system,

A loose collection of ice and dust that orbits the sun, typically in a long narrow orbit.

The fuzzy outer layer of a comet.

The solid inner core of a comet.

a chunk of rock or dust in space, generally smaller than an asteroid.

A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.

A meteoroid that passes through the atmosphere and hits Earth's surface.

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Question	Answer
solar system	The system consisting of the sun and the planets and other objects that revolve around.
planet	An object that orbits a star, is large enough to have become rounded by it's own gravity, and has cleared an area of orbit.
astronomical unit	A unit of distance equal to the average distant between Earth and the sun, about 150 million kilometers.
dwarf planet	An object that orbits the sun and is spherical, but has not cleared an area of it's orbit.
planetesimal	One of the small asteroid-like bodies that formed the building blocks of the planets.
core	The central region of the sun, where nuclear fusion takes place.
nuclear fusion	The process in which two atomic nuclei combine to form a larger nucleus, forming a heavier element and releasing huge amounts of energy; the process by which energy is produced by stars.
radiation zone	A region of very tightly packed glass in the sun's interior where energy is transferred mainly in the form of electromagnetic radiation.
convection zone	The outermost layer of the sun's interior.
photosphere	the inner layer of the sun's atmosphere that gives off its visible light; the sun's surface.
chromosphere	The middle layer of the sun's atmosphere.
corona	The outer layer of the sun's atmosphere.
solar wind	A stream of electrically charged particles that emanate from the sun's corona.
sunspot	A dark area of gas on the sun's surface that is cooler than surrounding gases
prominence	A huge, reddish loop of gas that protrudes from the sun's surface, linking parts of sunspot regions.
solar flare	An eruption of gas from the sun's surface that occurs when loops in the sunspot regions that suddenly connect.
terrestrial planet	The name very often given to the four inner planets: Mercury, Venus, Earth, and Mars.
greenhouse effect	The trapping of heat near a planet's surface by certain gases in the planet's atmosphere.
gas giant	The name often given to the outer planets: Jupiter, Saturn, Uranus, and Neptune.
ring	A thin disk of small ice and rock particles surrounding a planet.
asteroid belt	The region of the solar system between the orbits or Mars and Jupiter, where many asteroids are found.
Kuiper belt	A region where many small objects orbit the sun and that stretches from beyond the orbit of Neptune to about 100 times Earth's distance from the sun.
Oort cloud	A spherical region of comets that surrounds the solar system,
comet	A loose collection of ice and dust that orbits the sun, typically in a long narrow orbit.
coma	The fuzzy outer layer of a comet.
nucleus	The solid inner core of a comet.
asteroid	One of the rocky objects
meteoroid	a chunk of rock or dust in space, generally smaller than an asteroid.
meteor	A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.
meteorite	A meteoroid that passes through the atmosphere and hits Earth's surface.

Created by: user-1975219

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